package org.bluewhale.hibernate.dao;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Transaction;
import org.hibernate.criterion.Example;

/**
 * A data access object (DAO) providing persistence and search support for
 * SkUserRecommand entities. Transaction control of the save(), update() and
 * delete() operations can directly support Spring container-managed
 * transactions or they can be augmented to handle user-managed Spring
 * transactions. Each of these methods provides additional information for how
 * to configure it for the desired type of transaction control.
 * 
 * @see org.bluewhale.hibernate.dao.SkUserRecommand
 * @author MyEclipse Persistence Tools
 */

public class SkUserRecommandDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(SkUserRecommandDAO.class);
	// property constants
	public static final String BOOK_ID = "bookId";
	public static final String PIC_URL = "picUrl";
	public static final String TIME = "time";
	public static final String RANK = "rank";

	public void save(SkUserRecommand transientInstance) {
		log.debug("saving SkUserRecommand instance");
		try {
			Transaction tx = getSession().beginTransaction();
			getSession().save(transientInstance);
			tx.commit();
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(SkUserRecommand persistentInstance) {
		log.debug("deleting SkUserRecommand instance");
		try {
			Transaction tx = getSession().beginTransaction();
			getSession().delete(persistentInstance);
			tx.commit();
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public SkUserRecommand findById(java.lang.Integer id) {
		log.debug("getting SkUserRecommand instance with id: " + id);
		try {
			SkUserRecommand instance = (SkUserRecommand) getSession().get(
					"org.bluewhale.hibernate.dao.SkUserRecommand", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(SkUserRecommand instance) {
		log.debug("finding SkUserRecommand instance by example");
		try {
			List results = getSession().createCriteria(
					"org.bluewhale.hibernate.dao.SkUserRecommand").add(
					Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding SkUserRecommand instance with property: "
				+ propertyName + ", value: " + value);
		try {
			String queryString = "from SkUserRecommand as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByBookId(Object bookId) {
		return findByProperty(BOOK_ID, bookId);
	}

	public List findByPicUrl(Object picUrl) {
		return findByProperty(PIC_URL, picUrl);
	}

	public List findByTime(Object time) {
		return findByProperty(TIME, time);
	}

	public List findByRank(Object rank) {
		return findByProperty(RANK, rank);
	}

	public List findAll() {
		log.debug("finding all SkUserRecommand instances");
		try {
			String queryString = "from SkUserRecommand";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public SkUserRecommand merge(SkUserRecommand detachedInstance) {
		log.debug("merging SkUserRecommand instance");
		try {
			SkUserRecommand result = (SkUserRecommand) getSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(SkUserRecommand instance) {
		log.debug("attaching dirty SkUserRecommand instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(SkUserRecommand instance) {
		log.debug("attaching clean SkUserRecommand instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}